US8674003B2 - Adhesive - Google Patents

Adhesive Download PDF

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Publication number
US8674003B2
US8674003B2 US13/568,123 US201213568123A US8674003B2 US 8674003 B2 US8674003 B2 US 8674003B2 US 201213568123 A US201213568123 A US 201213568123A US 8674003 B2 US8674003 B2 US 8674003B2
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adhesive
weight parts
nano
polyester resin
unsaturated polyester
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US20120302687A1 (en
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Kunwen DU
Kunwu Du
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Wuhan Keda Marble Protective Materials Co Ltd
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Wuhan Keda Marble Protective Materials Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
    • C09J167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives

Definitions

  • the invention relates to an adhesive for filling in the gaps between stones.
  • the adhesive is also suitable for filling in gaps between ceramics and other building materials.
  • Unsaturated resin adhesives are mainly used for filling in and bonding stone. In China, they are mainly used for marble, thereby with a nickname of marble glue.
  • the bonding of stones includes structural bonding and non-structural bonding.
  • Marble glue bonds stones mainly using filling in gaps therein, i.e., by non-structural bonding.
  • non-structural bonding employs organic adhesives to mend, fill in, strengthen, and fix the defects of stone, for example, fissures, cracks, apertures, and sand holes.
  • Bonding using filling in has huge difference from structural bonding in load-carrying capability. Bonding using filling in basically does not bear load, and the function of the filling in is mainly to beautify stone and standardize product size.
  • Marble glue is mainly used for the bonding of stone with the ground, or the bonding of stone with wall having a height of less than 9 meters. Marble glue is required to bear a minor load, and thus the bonding strength thereof should meet a certain standard, but the requirement for air dry, brightness, shrinkage, and permeability is low. Gap-filling adhesives are mainly used for filling in gaps between stone and need contact with air. Thus, there is a low requirement on the bonding strength of gap-filling adhesives in contrast to that of marble glue, but the air drying, brightness, shrinkage, and permeability thereof should be high.
  • Marble glue if used as a gap-filling adhesive, has the following disadvantages: a) poor air drying property, and viscosity after curing; b) there is a color difference between polished glue and stone; 3) poor shrinkage resistance, which makes the cured glue concave or separate from stone; and 4) poor permeability, which results in an incomplete filling in or produces holes.
  • an adhesive For filling in gaps between stones, an adhesive should have the following characteristics:
  • the adhesive should have good permeability, that is to say, the colloid of the adhesive is fine and easy to blend, and after curing agents added, the adhesive has a certain fluidity and can permeate into small cracks in the stone. Because the colloid is fine, so is the filling joint, which increases the sense of beauty. 2)
  • the adhesive should have good air-drying property and be not sticky after curing, which means an instant polishing can be carried out and no black spots occurs in the filling joints.
  • the adhesive should have good shrinkage resistance so that after the adhesive cured, no concave formed and the adhesive will not separate from stone. 4)
  • the polished adhesive should have a brightness (dependent on the hardness of the adhesive) equivalent as that of polished stone the adhesive.
  • an adhesive comprising at least 100 weight parts of an unsaturated polyester resin suitable for air-drying, between 0 and 5 weight parts of hydrogenated castor oil, between 1 and 20 weight parts of nano powder, between 0 and 100 weight parts of a filler, and between 1 and 15 weight parts of an anti-shrinking agent.
  • the adhesive comprises 100 weight parts of the unsaturated polyester resin suitable for air-drying, between 1 and 3 weight parts of the hydrogenated castor oil, between 3 and 10 weight parts of nano powder, between 10 to 60 weight parts of the filler, and between 5 and 10 weight parts of the anti-shrinking agent.
  • the adhesive comprises 100 weight parts of the unsaturated polyester resin suitable for air-drying, 2 weight parts of the hydrogenated castor oil, 6 weight parts of the nano powder, 40 weight parts of the filler, and 8 weight parts of the anti-shrinking agent.
  • the unsaturated polyester resin suitable for air-drying is selected from the group consisting of dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification, allyl glycidyl ether-modified unsaturated polyester resin, or trimethylolpropane diallyl ether-modified unsaturated polyester resin.
  • the adhesive further comprises between 1 and 5 weight parts of an active diluents which makes the adhesive easy to blend, permeate but doesn't affect its sticky property.
  • the nano powder and the filler are dispersed using ultrasonic, or mixed at a high speed of at least 1,500 rpm.
  • the nano powder is selected from the group consisting of nano silicon dioxide, nano calcium carbonate, nano magnesium silicate, nano calcium oxide, nano alumina, or a mixture thereof.
  • the filler is selected from the group consisting of micron silica, transparent talcum powder, or a mixture thereof.
  • the anti-shrinking agent is selected from the group consisting of polypropyl acetate, poly (adipate-co-propanetriol), poly vinyl acetate, polyacrylate, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, or a mixture thereof.
  • the active diluent is selected from the group consisting of styrene, ⁇ -methyl styrene, glycerol diallyl ether adipate, diallyl phthalate, 2-chlorostyrene, p-tert-butyl styrene, or a mixture thereof.
  • the filler used is between 300 and 1,250 mesh on the average.
  • the adhesive has good permeability, fine colloid, and is easy to blend. After curing agents added, it has a certain fluidity and can be permeate into small cracks in the stone. Because the colloid is fine, so is the filling joint, which increases the sense of beauty. 2)
  • the adhesive has good air-drying quality, and thus is not sticky after curing, which means an instant polishing can be carried out.
  • the adhesive has strong shrinkage resistance, neither concave nor separation from the stone happening after curing. 4)
  • the polished adhesive has a brightness equivalent as that of polished stone. 5) The adhesive has high transparency.
  • the nano powder works as a thixotropic agent, and it is dispersed by ultrasonic wave or high speed stirring, thus, it is not easy to agglomerate. Its diameter is shorter than half of the optical wavelength, which makes the light pass directly, thus the transparency and color of the unsaturated polyester resin will not be affected after the nano powder added. 6)
  • the adhesive has higher bonding strength, because it rarely uses hydrogenated castor oil which decreases the bonding strength as a thixotropic agent. 7)
  • the invention solves the difficult problem of gap-filling of stone and as a new category of marble glue, the adhesive enriches the type of marble glue.
  • an unsaturated polyester resin suitable for air-drying When cured in the air, an unsaturated polyester resin suitable for air-drying is dried to form film, free of interference from oxygen, and the surface thereof is not sticky.
  • the characteristic is known as air dry.
  • the polymer hydroperoxide can produce free radicals with strong activity to make reaction proceed to yield high molecular weight polymers.
  • allyl ether CH 2 ⁇ CH—CH 2 —O—
  • non-conjugated double bonds —CH ⁇ CH—CH 2 —CH ⁇ CH—
  • an anti-shrinking agent of the invention When a gap-filing adhesive of the invention is curing, the anti-shrinking agent experiences thermal expansion. The expansion offsets the volume contraction originated from the curing of the polyester around the corner. Subsequently, the two phases are cooled simultaneously. Because the anti-shrinking agent has bigger shrinking percentage than the polyester, many small holes form at the interface of the two phases. The formation of the holes eliminates the internal stress, and thus the polyester no longer contracts.
  • the unsaturated polyester resin suitable for air-drying includes but is not limited to dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification, allyl glycidyl ether-modified unsaturated polyester resin, or trimethylolpropane diallyl ether-modified unsaturated polyester resin. All these polyester resins can be purchased from markets.
  • the shrinking percentage of the unsaturated polyester resin suitable for air-drying is about between 5 and 8%.
  • the active diluent selected from the group consisting of diallyl phthalate, 2-chlorostyrene, and p-tert-butyl styrene has capacity of anti-shrinking.
  • As an active diluent glycerol diallyl ether adipate has capacity of air dry. All these active diluents can be purchased from markets. As needed, other active diluents can also be applied.
  • the anti-shrinking agent is selected from the group consisting of polypropyl acetate, poly(adipate-co-propanetriol), poly vinyl acetate, polyacrylate, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, or a mixture thereof.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 8 weight parts of nano silica, 3 weight parts of nano calcium carbonate, 3 weight parts of nano magnesium silicate, 3 weight parts of nano calcium oxide, 3 weight parts of nano alumina, 15 weight parts of polyacrylate (an anti-shrinking agent).
  • the unsaturated polyester resin suitable for air-drying is dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification.
  • the pressure-shear strength of the adhesive is 15.6 MPa
  • the tensile-shear strength thereof is 16.4 MPa
  • the rebound deflection thereof is 3278.0 MPa
  • the impact flexibility thereof is 5.1 KJ/m 2
  • the hardness thereof is 73.6 HSD
  • the shrinking percentage thereof is 0.07%.
  • the adhesive is mixed and stirred uniformly with a curing agent, a mixing ratio of the adhesive to the curing agent being 100:3 which can be adjusted according to the usage demand.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 5 weight parts of hydrogenated castor oil, one weight part of nano silica, and 15 weight parts of poly vinyl acetate (an anti-shrinking agent).
  • the unsaturated polyester resin suitable for air-drying is dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification.
  • the pressure-shear strength of the adhesive is 13.8 MPa
  • the tensile-shear strength thereof is 14.6 MPa
  • the rebound deflection thereof is 4073.6 MPa
  • the impact flexibility thereof is 3.2 KJ/m 2
  • the hardness thereof is 73.4 HSD
  • the shrinking percentage thereof is 0.08%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, one weight part of hydrogenated castor oil, 4 weight parts of nano silica, 3 weight parts of nano calcium carbonate, 2 weight parts of nano magnesium silicate, one weight part of nano calcium oxide, 10 weight parts of silica (800 mesh on the average), one weight part of polyethylene (an anti-shrinking agent), 3 weight parts of diallyl phthalate, one weight part of styrene, and one weight part of ⁇ -methyl styrene (an active diluent).
  • the unsaturated polyester resin suitable for air-drying is allyl glycidyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 16.7 MPa
  • the tensile-shear strength thereof is 17.5 MPa
  • the rebound deflection thereof is 3668.1 MPa
  • the impact flexibility thereof is 4.83 KJ/m 2
  • the hardness thereof is 72.1 HSD
  • the shrinking percentage thereof is 2.64%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 3 weight parts of hydrogenated castor oil, 3 weight parts of nano silica, 60 weight parts of micron silica (400 mesh on the average), 9 weight parts of polystyrene (an anti-shrinking agent), and 3 weight parts of 2-chlorostyrene (an active diluent).
  • the unsaturated polyester resin suitable for air-drying is dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification.
  • the pressure-shear strength of the adhesive is 17.4 MPa
  • the tensile-shear strength thereof is 17.8 MPa
  • the rebound deflection thereof is 4583.7 MPa
  • the impact flexibility thereof is 3.75 KJ/m 2
  • the hardness thereof is 68.3 HSD
  • the shrinking percentage thereof is 0.73%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 2 weight parts of hydrogenated castor oil, 4 weight parts of nano silica, 2 weight parts of nano calcium carbonate, 40 weight parts of micron silica, 8 weight parts of polyacrylate (an anti-shrinking agent), and 4 weight parts of p-tert-butyl styrene (an active diluent).
  • the unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 17.9 MPa
  • the tensile-shear strength thereof is 18.3 MPa
  • the rebound deflection thereof is 4301.4 MPa
  • the impact flexibility thereof is 4.32 KJ/m 2
  • the hardness thereof is 70.9 HSD
  • the shrinking percentage thereof is 0.28%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 3 weight parts of nano silica, 2 weight parts of nano magnesium silicate, 20 weight parts of micron silica (700 mesh on the average), and 10 weight parts of polypropyl acetate (an anti-shrinking agent).
  • the unsaturated polyester resin suitable for air-drying is allyl glycidyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 17.5 MPa
  • the tensile-shear strength thereof is 18.1 MPa
  • the rebound deflection thereof is 4018.5 MPa
  • the impact flexibility thereof is 4.51 KJ/m 2
  • the hardness thereof is 71.6 HSD
  • the shrinking percentage thereof is 0.90%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 3 weight parts of nano silica, 3 weight parts of nano magnesium silicate, one weight part of nano calcium oxide, 80 weight parts of micron silica (400 mesh on the average), 2 weight parts of polyvinyl chloride, 3 weight parts of polyacrylate, and one weight part of glycerol diallyl ether adipate.
  • the unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 17.8 MPa
  • the tensile-shear strength thereof is 18.4 MPa
  • the rebound deflection thereof is 4890.0 MPa
  • the impact flexibility thereof is 3.10 KJ/m 2
  • the hardness thereof is 66.1 HSD
  • the shrinking percentage thereof is 1.29%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 7 weight parts of nano calcium carbonate, 3 weight parts of nano magnesium silicate, 2 weight parts of nano calcium oxide, 15 weight parts of transparent talcum powder (1,250 mesh on the average), 2 weight parts of poly vinyl acetate, 2 weight parts of polystyrene, one weight part of poly (adipate-co-propanetriol), 2 weight parts of polymethyl methacrylate, 2 weight parts of diallyl phthalate, and one weight part of glycerol diallyl ether adipate.
  • the unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 16.9 MPa
  • the tensile-shear strength thereof is 17.3 MPa
  • the rebound deflection thereof is 3782.8 MPa
  • the impact flexibility thereof is 4.57 KJ/m 2
  • the hardness thereof is 71.9 HSD
  • the shrinking percentage thereof is 0.78%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 7 weight parts of nano calcium carbonate, 3 weight parts of nano magnesium silicate, 30 weight parts of micron silica (400 mesh on the average), 3 weight parts of polystyrene, one weight part of polymethyl methacrylate, 2 weight parts of diallyl phthalate, and 3 weight parts of 2-chlorostyrene (an active diluent).
  • the unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 18.0 MPa
  • the tensile-shear strength thereof is 18.7 MPa
  • the rebound deflection thereof is 4283.7 MPa
  • the impact flexibility thereof is 4.46 KJ/m 2
  • the hardness thereof is 70.3 HSD
  • the shrinking percentage thereof is 1.28%.
  • the usage method of the adhesive is the same as that in Example 1.
  • the Usage Amount is Calculated by Weight
  • An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 5 weight parts of nano magnesium silicate, 8 weight parts of micron silica (1000 mesh on the average), 5 weight parts of polyacrylate, 2 weight parts of polymethyl methacrylate, one weight part of p-tert-butyl styrene, one weight part of glycerol diallyl ether adipate, one weight part of diallyl phthalate, and one weight part of 2-chlorostyrene.
  • the unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
  • the pressure-shear strength of the adhesive is 16.6 MPa
  • the tensile-shear strength thereof is 17.3 MPa
  • the rebound deflection thereof is 3554.5 MPa
  • the impact flexibility thereof is 4.89 KJ/m 2
  • the hardness thereof is 72.5 HSD
  • the shrinking percentage thereof is 1.05%.
  • the usage method of the adhesive is the same as that in Example 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

An adhesive, including: at least 100 weight parts of an unsaturated polyester resin suitable for air-drying, between 0 and 5 weight parts of hydrogenated castor oil, between 1 and 20 weight parts of nano powder, between 0 and 100 weight parts of a filler, and between 1 and 15 weight parts of an anti-shrinking agent.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of International Patent Application No. PCT/CN2011/074032 with an international filing date of May 13, 2011, designating the United States, now pending, and further claims priority benefits to Chinese Patent Application No. 201010201032.X filed Jun. 8, 2010. The contents of all of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P. C., Attn.: Dr. Matthias Scholl Esq., 14781 Memorial Dr., Suite 1319, Houston, Tex. 77079.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an adhesive for filling in the gaps between stones. The adhesive is also suitable for filling in gaps between ceramics and other building materials.
2. Description of the Related Art
Unsaturated resin adhesives are mainly used for filling in and bonding stone. In China, they are mainly used for marble, thereby with a nickname of marble glue.
The bonding of stones includes structural bonding and non-structural bonding. Marble glue bonds stones mainly using filling in gaps therein, i.e., by non-structural bonding. Different from structural bonding which supports a big load, non-structural bonding employs organic adhesives to mend, fill in, strengthen, and fix the defects of stone, for example, fissures, cracks, apertures, and sand holes.
Bonding using filling in has huge difference from structural bonding in load-carrying capability. Bonding using filling in basically does not bear load, and the function of the filling in is mainly to beautify stone and standardize product size.
In the past few years, with the rapid development of bonding adhesives, marble glue has been widely applied in household decoration, quick positioning, amendment, splicing, and filling in gaps of stone.
Marble glue is mainly used for the bonding of stone with the ground, or the bonding of stone with wall having a height of less than 9 meters. Marble glue is required to bear a minor load, and thus the bonding strength thereof should meet a certain standard, but the requirement for air dry, brightness, shrinkage, and permeability is low. Gap-filling adhesives are mainly used for filling in gaps between stone and need contact with air. Thus, there is a low requirement on the bonding strength of gap-filling adhesives in contrast to that of marble glue, but the air drying, brightness, shrinkage, and permeability thereof should be high.
Marble glue, if used as a gap-filling adhesive, has the following disadvantages: a) poor air drying property, and viscosity after curing; b) there is a color difference between polished glue and stone; 3) poor shrinkage resistance, which makes the cured glue concave or separate from stone; and 4) poor permeability, which results in an incomplete filling in or produces holes.
SUMMARY OF THE INVENTION
For filling in gaps between stones, an adhesive should have the following characteristics:
1) The adhesive should have good permeability, that is to say, the colloid of the adhesive is fine and easy to blend, and after curing agents added, the adhesive has a certain fluidity and can permeate into small cracks in the stone. Because the colloid is fine, so is the filling joint, which increases the sense of beauty. 2) The adhesive should have good air-drying property and be not sticky after curing, which means an instant polishing can be carried out and no black spots occurs in the filling joints. 3) The adhesive should have good shrinkage resistance so that after the adhesive cured, no concave formed and the adhesive will not separate from stone. 4) The polished adhesive should have a brightness (dependent on the hardness of the adhesive) equivalent as that of polished stone the adhesive.
In view of the above-described problems, it is one objective of the invention to provide an adhesive for filling in gaps between stones.
To achieve the above objectives, in accordance with one embodiment of the invention, there is provided an adhesive comprising at least 100 weight parts of an unsaturated polyester resin suitable for air-drying, between 0 and 5 weight parts of hydrogenated castor oil, between 1 and 20 weight parts of nano powder, between 0 and 100 weight parts of a filler, and between 1 and 15 weight parts of an anti-shrinking agent.
In a class of this embodiment, the adhesive comprises 100 weight parts of the unsaturated polyester resin suitable for air-drying, between 1 and 3 weight parts of the hydrogenated castor oil, between 3 and 10 weight parts of nano powder, between 10 to 60 weight parts of the filler, and between 5 and 10 weight parts of the anti-shrinking agent.
In a class of this embodiment, the adhesive comprises 100 weight parts of the unsaturated polyester resin suitable for air-drying, 2 weight parts of the hydrogenated castor oil, 6 weight parts of the nano powder, 40 weight parts of the filler, and 8 weight parts of the anti-shrinking agent.
In a class of this embodiment, the unsaturated polyester resin suitable for air-drying is selected from the group consisting of dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification, allyl glycidyl ether-modified unsaturated polyester resin, or trimethylolpropane diallyl ether-modified unsaturated polyester resin.
In a class of this embodiment, the adhesive further comprises between 1 and 5 weight parts of an active diluents which makes the adhesive easy to blend, permeate but doesn't affect its sticky property.
In a class of this embodiment, the nano powder and the filler are dispersed using ultrasonic, or mixed at a high speed of at least 1,500 rpm.
In a class of this embodiment, the nano powder is selected from the group consisting of nano silicon dioxide, nano calcium carbonate, nano magnesium silicate, nano calcium oxide, nano alumina, or a mixture thereof.
In a class of this embodiment, the filler is selected from the group consisting of micron silica, transparent talcum powder, or a mixture thereof.
In a class of this embodiment, the anti-shrinking agent is selected from the group consisting of polypropyl acetate, poly (adipate-co-propanetriol), poly vinyl acetate, polyacrylate, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, or a mixture thereof.
In a class of this embodiment, the active diluent is selected from the group consisting of styrene, α-methyl styrene, glycerol diallyl ether adipate, diallyl phthalate, 2-chlorostyrene, p-tert-butyl styrene, or a mixture thereof.
In a class of this embodiment, the filler used is between 300 and 1,250 mesh on the average.
Advantages of the invention are summarized below. 1) The adhesive has good permeability, fine colloid, and is easy to blend. After curing agents added, it has a certain fluidity and can be permeate into small cracks in the stone. Because the colloid is fine, so is the filling joint, which increases the sense of beauty. 2) The adhesive has good air-drying quality, and thus is not sticky after curing, which means an instant polishing can be carried out. 3) The adhesive has strong shrinkage resistance, neither concave nor separation from the stone happening after curing. 4) The polished adhesive has a brightness equivalent as that of polished stone. 5) The adhesive has high transparency. The nano powder works as a thixotropic agent, and it is dispersed by ultrasonic wave or high speed stirring, thus, it is not easy to agglomerate. Its diameter is shorter than half of the optical wavelength, which makes the light pass directly, thus the transparency and color of the unsaturated polyester resin will not be affected after the nano powder added. 6) The adhesive has higher bonding strength, because it rarely uses hydrogenated castor oil which decreases the bonding strength as a thixotropic agent. 7) The invention solves the difficult problem of gap-filling of stone and as a new category of marble glue, the adhesive enriches the type of marble glue.
DETAILED DESCRIPTION OF THE EMBODIMENTS
For further illustrating the invention, experiments detailing an adhesive of colored stone are described below. It should be noted that the following examples are intended to describe and not to limit the invention.
When cured in the air, an unsaturated polyester resin suitable for air-drying is dried to form film, free of interference from oxygen, and the surface thereof is not sticky. The characteristic is known as air dry.
The principle of air dry is described below. When an unsaturated polyester resin (UPR in short) is cured at normal temperature, the surface thereof is often sticky, which causes inconvenience for use. The curing mechanism of UPR is based on the radical copolymerization. The activity of free radicals determines the polymerization rate thereby affecting the size of the polymer molecular weight.
If oxygen is involved in the curing of unsaturated polyester resins, a sticky surface will form. Free radical R. generated at early stage contacts with oxygen to yield a polymer peroxy radical RO2.. The activity of R. is stronger than that of RO2.. The half life of R. is 10−8 s, and that of RO2. is 10−2 s. On the surface, the RO2. is dominant, thereby inhibiting the increase of polymer molecular weight. However, the polymer peroxy radical RO2. easily contacts with hydrogen connected to positively-charged carbon to yield a polymer hydroperoxide, that is,
ROO.+HR1→>ROOH+R1..
The polymer hydroperoxide can produce free radicals with strong activity to make reaction proceed to yield high molecular weight polymers.
For example, allyl ether (CH2═CH—CH2—O—) and non-conjugated double bonds (—CH═CH—CH2—CH═CH—) have positive carbon atoms, and thus have the capacity of automatic oxygen absorption.
The anti-shrinkage mechanism of an anti-shrinking agent of the invention is described below. When a gap-filing adhesive of the invention is curing, the anti-shrinking agent experiences thermal expansion. The expansion offsets the volume contraction originated from the curing of the polyester around the corner. Subsequently, the two phases are cooled simultaneously. Because the anti-shrinking agent has bigger shrinking percentage than the polyester, many small holes form at the interface of the two phases. The formation of the holes eliminates the internal stress, and thus the polyester no longer contracts.
The unsaturated polyester resin suitable for air-drying includes but is not limited to dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification, allyl glycidyl ether-modified unsaturated polyester resin, or trimethylolpropane diallyl ether-modified unsaturated polyester resin. All these polyester resins can be purchased from markets. The shrinking percentage of the unsaturated polyester resin suitable for air-drying is about between 5 and 8%.
The active diluent selected from the group consisting of diallyl phthalate, 2-chlorostyrene, and p-tert-butyl styrene, has capacity of anti-shrinking. As an active diluent, glycerol diallyl ether adipate has capacity of air dry. All these active diluents can be purchased from markets. As needed, other active diluents can also be applied.
The anti-shrinking agent is selected from the group consisting of polypropyl acetate, poly(adipate-co-propanetriol), poly vinyl acetate, polyacrylate, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, or a mixture thereof.
Technical indexes according to building materials industry standards JC/T989-2006, PRC. are given below:
Technical indexes
High-class Qualified
Items products products
Color, appearance, and state in a Products should be fine viscous
container paste with uniform color, without
obvious isolation and gel as well
as rough particles, easy to stir,
and color or package of products
should be clearly distinguishable.
Rebound deflection (MPa) ≧ 2000 1500
Impact flexibility (KJ/m2) ≧ 3.0 2.0
Pressure-shear Stone- Standard 8.0 7.0
strength stone conditions
(MPa) ≧
Example 1 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 8 weight parts of nano silica, 3 weight parts of nano calcium carbonate, 3 weight parts of nano magnesium silicate, 3 weight parts of nano calcium oxide, 3 weight parts of nano alumina, 15 weight parts of polyacrylate (an anti-shrinking agent). The unsaturated polyester resin suitable for air-drying is dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification.
Measurement shows that, the pressure-shear strength of the adhesive is 15.6 MPa, the tensile-shear strength thereof is 16.4 MPa, the rebound deflection thereof is 3278.0 MPa, the impact flexibility thereof is 5.1 KJ/m2, the hardness thereof is 73.6 HSD, and the shrinking percentage thereof is 0.07%.
In use, the adhesive is mixed and stirred uniformly with a curing agent, a mixing ratio of the adhesive to the curing agent being 100:3 which can be adjusted according to the usage demand.
Example 2 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 5 weight parts of hydrogenated castor oil, one weight part of nano silica, and 15 weight parts of poly vinyl acetate (an anti-shrinking agent). The unsaturated polyester resin suitable for air-drying is dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification.
Measurement shows that, the pressure-shear strength of the adhesive is 13.8 MPa, the tensile-shear strength thereof is 14.6 MPa, the rebound deflection thereof is 4073.6 MPa, the impact flexibility thereof is 3.2 KJ/m2, the hardness thereof is 73.4 HSD, and the shrinking percentage thereof is 0.08%.
The usage method of the adhesive is the same as that in Example 1.
Example 3 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, one weight part of hydrogenated castor oil, 4 weight parts of nano silica, 3 weight parts of nano calcium carbonate, 2 weight parts of nano magnesium silicate, one weight part of nano calcium oxide, 10 weight parts of silica (800 mesh on the average), one weight part of polyethylene (an anti-shrinking agent), 3 weight parts of diallyl phthalate, one weight part of styrene, and one weight part of α-methyl styrene (an active diluent). The unsaturated polyester resin suitable for air-drying is allyl glycidyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 16.7 MPa, the tensile-shear strength thereof is 17.5 MPa, the rebound deflection thereof is 3668.1 MPa, the impact flexibility thereof is 4.83 KJ/m2, the hardness thereof is 72.1 HSD, and the shrinking percentage thereof is 2.64%.
The usage method of the adhesive is the same as that in Example 1.
Example 4 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 3 weight parts of hydrogenated castor oil, 3 weight parts of nano silica, 60 weight parts of micron silica (400 mesh on the average), 9 weight parts of polystyrene (an anti-shrinking agent), and 3 weight parts of 2-chlorostyrene (an active diluent). The unsaturated polyester resin suitable for air-drying is dicyclopentadiene-modified unsaturated polyester resin synthesized using half-esterification.
Measurement shows that, the pressure-shear strength of the adhesive is 17.4 MPa, the tensile-shear strength thereof is 17.8 MPa, the rebound deflection thereof is 4583.7 MPa, the impact flexibility thereof is 3.75 KJ/m2, the hardness thereof is 68.3 HSD, and the shrinking percentage thereof is 0.73%.
The usage method of the adhesive is the same as that in Example 1.
Example 5 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 2 weight parts of hydrogenated castor oil, 4 weight parts of nano silica, 2 weight parts of nano calcium carbonate, 40 weight parts of micron silica, 8 weight parts of polyacrylate (an anti-shrinking agent), and 4 weight parts of p-tert-butyl styrene (an active diluent). The unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 17.9 MPa, the tensile-shear strength thereof is 18.3 MPa, the rebound deflection thereof is 4301.4 MPa, the impact flexibility thereof is 4.32 KJ/m2, the hardness thereof is 70.9 HSD, and the shrinking percentage thereof is 0.28%.
The usage method of the adhesive is the same as that in Example 1.
Example 6 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 3 weight parts of nano silica, 2 weight parts of nano magnesium silicate, 20 weight parts of micron silica (700 mesh on the average), and 10 weight parts of polypropyl acetate (an anti-shrinking agent). The unsaturated polyester resin suitable for air-drying is allyl glycidyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 17.5 MPa, the tensile-shear strength thereof is 18.1 MPa, the rebound deflection thereof is 4018.5 MPa, the impact flexibility thereof is 4.51 KJ/m2, the hardness thereof is 71.6 HSD, and the shrinking percentage thereof is 0.90%.
The usage method of the adhesive is the same as that in Example 1.
Example 7 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 3 weight parts of nano silica, 3 weight parts of nano magnesium silicate, one weight part of nano calcium oxide, 80 weight parts of micron silica (400 mesh on the average), 2 weight parts of polyvinyl chloride, 3 weight parts of polyacrylate, and one weight part of glycerol diallyl ether adipate. The unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 17.8 MPa, the tensile-shear strength thereof is 18.4 MPa, the rebound deflection thereof is 4890.0 MPa, the impact flexibility thereof is 3.10 KJ/m2, the hardness thereof is 66.1 HSD, and the shrinking percentage thereof is 1.29%.
The usage method of the adhesive is the same as that in Example 1.
Example 8 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 7 weight parts of nano calcium carbonate, 3 weight parts of nano magnesium silicate, 2 weight parts of nano calcium oxide, 15 weight parts of transparent talcum powder (1,250 mesh on the average), 2 weight parts of poly vinyl acetate, 2 weight parts of polystyrene, one weight part of poly (adipate-co-propanetriol), 2 weight parts of polymethyl methacrylate, 2 weight parts of diallyl phthalate, and one weight part of glycerol diallyl ether adipate. The unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 16.9 MPa, the tensile-shear strength thereof is 17.3 MPa, the rebound deflection thereof is 3782.8 MPa, the impact flexibility thereof is 4.57 KJ/m2, the hardness thereof is 71.9 HSD, and the shrinking percentage thereof is 0.78%.
The usage method of the adhesive is the same as that in Example 1.
Example 9 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 7 weight parts of nano calcium carbonate, 3 weight parts of nano magnesium silicate, 30 weight parts of micron silica (400 mesh on the average), 3 weight parts of polystyrene, one weight part of polymethyl methacrylate, 2 weight parts of diallyl phthalate, and 3 weight parts of 2-chlorostyrene (an active diluent). The unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 18.0 MPa, the tensile-shear strength thereof is 18.7 MPa, the rebound deflection thereof is 4283.7 MPa, the impact flexibility thereof is 4.46 KJ/m2, the hardness thereof is 70.3 HSD, and the shrinking percentage thereof is 1.28%.
The usage method of the adhesive is the same as that in Example 1.
Example 10 The Usage Amount is Calculated by Weight
An adhesive for filling in gaps between stones comprises 100 weight parts of an unsaturated polyester resin suitable for air-drying, 5 weight parts of nano magnesium silicate, 8 weight parts of micron silica (1000 mesh on the average), 5 weight parts of polyacrylate, 2 weight parts of polymethyl methacrylate, one weight part of p-tert-butyl styrene, one weight part of glycerol diallyl ether adipate, one weight part of diallyl phthalate, and one weight part of 2-chlorostyrene. The unsaturated polyester resin suitable for air-drying is trimethylolpropane diallyl ether-modified unsaturated polyester resin.
Measurement shows that, the pressure-shear strength of the adhesive is 16.6 MPa, the tensile-shear strength thereof is 17.3 MPa, the rebound deflection thereof is 3554.5 MPa, the impact flexibility thereof is 4.89 KJ/m2, the hardness thereof is 72.5 HSD, and the shrinking percentage thereof is 1.05%.
The usage method of the adhesive is the same as that in Example 1.
In the trial period, the adhesive for filling in gaps between stones completely meet the requirement for filling in gaps between stones.
While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims (19)

The invention claimed is:
1. An adhesive, comprising:
at least 100 weight parts of an unsaturated polyester resin selected from the group consisting of dicyclopentadiene-modified unsaturated polyester resin, allyl glycidyl ether-modified unsaturated polyester resin, and trimethylolpropane diallyl ether-modified unsaturated polyester resin;
between 1 and 20 weight parts of nano powder;
and
between 1 and 15 weight parts of an anti-shrinking agent.
2. The adhesive of claim 1, wherein the adhesive further comprises not more than 5 weight parts of hydrogenated castor oil.
3. The adhesive of claim 1, wherein the adhesive further comprises not more than 100 weight parts of a filler.
4. The adhesive of claim 1, further comprising between 1 and 5 weight parts of an active diluent.
5. The adhesive of claim 1, wherein the nano powder is selected from the group consisting of nano silicon dioxide, nano calcium carbonate, nano magnesium silicate, nano calcium oxide, nano alumina, and a mixture thereof.
6. The adhesive of claim 1, wherein the anti-shrinking agent is selected from the group consisting of polypropyl acetate, poly (adipate-co-propanetriol), poly vinyl acetate, polyacrylate, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, and a mixture thereof.
7. The adhesive of claim 4, wherein the active diluent is selected from the group consisting of styrene, α-methyl styrene, glycerol diallyl ether adipate, diallyl phthalate, 2-chlorostyrene, p-tert-butyl styrene, and a mixture thereof.
8. The adhesive of claim 3, wherein the filler is selected from the group consisting of micron silica, transparent talcum powder, and a mixture thereof.
9. The adhesive of claim 8, wherein the filler used is between 300 and 1,250 mesh on the average.
10. The adhesive of claim 2, wherein the adhesive further comprises not more than 100 weight parts of a filler.
11. The adhesive of claim 10, comprising: 100 weight parts of the unsaturated polyester resin, between 1 and 3 weight parts of the hydrogenated castor oil, between 3 and 10 weight parts of the nano powder, between 10 and 60 weight parts of the filler, and between 5 and 10 weight parts of the anti-shrinking agent.
12. The adhesive of claim 11, comprising: 100 weight parts of the unsaturated polyester resin, 2 weight parts of the hydrogenated castor oil, 6 weight parts of the nano powder, 40 weight parts of the filler, and 8 weight parts of the anti-shrinking agent.
13. The adhesive of claim 10, wherein the adhesive further comprises between 1 and 5 weight parts of an active diluent.
14. The adhesive of claim 10, wherein the nano powder is selected from the group consisting of nano silicon dioxide, nano calcium carbonate, nano magnesium silicate, nano calcium oxide, nano alumina, and a mixture thereof.
15. The adhesive of claim 10, wherein the filler is selected from the group consisting of micron silica, transparent talcum powder, and a mixture thereof.
16. The adhesive of claim 10, wherein the anti-shrinking agent is selected from the group consisting of polypropyl acetate, poly (adipate-co-propanetriol), poly vinyl acetate, polyacrylate, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, and a mixture thereof.
17. The adhesive of claim 10, wherein the nano powder and the filler are dispersed using ultrasonic wave, or mixed at a high speed of at least 1,500 rpm.
18. The adhesive of claim 13, wherein the active diluent is selected from the group consisting of styrene, α-methyl styrene, glycerol diallyl ether adipate, diallyl phthalate, 2-chlorostyrene, p-tert-butyl styrene, and a mixture thereof.
19. The adhesive of claim 15, wherein the filler is between 300 and 1,250 mesh on the average.
US13/568,123 2010-06-08 2012-08-06 Adhesive Active US8674003B2 (en)

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CN201010201032.X 2010-06-08
CN201010201032.XA CN101851483B (en) 2010-06-08 2010-06-08 Stone jointing adhesive
CN201010201032 2010-06-08
PCT/CN2011/074032 WO2011153892A1 (en) 2010-06-08 2011-05-13 Jointing adhesive for stone

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